| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust heat supply control system and an exhaust heat supply control method capable of reducing fuel cost and ensuring highly accurate temperature control even if a flow volume of reused exhaust gas is unstable.SOLUTION: An exhaust heat supply control system comprises: an exhaust heat source 10; a heat treatment furnace 20 to which exhaust gas of an exhaust heat source 10 is supplied; a first exhaust pipe 2 discharging the exhaust gas in a connection pipe 1 into outdoor air; a first valve 31 having a variable degree of opening and capable of regulating a flow volume of the exhaust gas supplied to the heat treatment furnace 20; a second valve 32 having a variable degree of opening and capable of adjusting a flow volume of exhaust gas discharged into the outdoor air; and a valve control unit 41 controlling the degrees of opening of the first valve 31 and the second valve 32 in response to an internal temperature of the heat treatment furnace 20, the valve control unit 41 setting low the degree of opening of the second valve 32 when setting high the degree of opening of the first valve 31, and setting high the degree of opening of the second valve 32 when setting low the degree of opening of the first valve 31, thereby making it possible to simultaneously control the flow volume of the exhaust gas supplied to the heat treatment furnace 20 and the flow volume of the exhaust gas discharged from the first exhaust pipe 2. |
